Track Engineering Insulator Specifications Quiz

<p>Adequate clearance (D)</p> Signup and view all the answers

<p>40 mm (B)</p> Signup and view all the answers

<p>AC immunity with specific voltage levels. (D)</p> Signup and view all the answers

<p>All of the above (D)</p> Signup and view all the answers

<p>2800 meters. (A)</p> Signup and view all the answers

<p>They must not come into contact (A)</p> Signup and view all the answers

<p>1.5. (D)</p> Signup and view all the answers

<p>Insulators according to approved instructions. (A)</p> Signup and view all the answers

<p>The Engineering department (D)</p> Signup and view all the answers

<p>40 mm (D)</p> Signup and view all the answers

<p>It is not affected by induced voltage. (C)</p> Signup and view all the answers

<p>As close to the cabin as possible. (B)</p> Signup and view all the answers

<p>They may transmit high rail voltage due to faults. (A)</p> Signup and view all the answers

<p>Advise all staff responsible for maintenance and operation of signalling equipment. (C)</p> Signup and view all the answers

<p>Immediately suspend the working of the equipment. (C)</p> Signup and view all the answers

<p>Proceed to the site and test all circuits and equipment. (C)</p> Signup and view all the answers

<p>They must be strictly observed by all staff. (B)</p> Signup and view all the answers

<p>A Certificate from a representative of the Signal Department. (D)</p> Signup and view all the answers

<p>Protect the line according to General Rule 3.62. (D)</p> Signup and view all the answers

<p>Guidelines prescribed in Appendix VII of ACTM Vol-II Part II should be followed. (D)</p> Signup and view all the answers

<p>To ensure reliable electrical circuit continuity and proper earthing. (D)</p> Signup and view all the answers

<p>Old DC track relays and DC line relays. (D)</p> Signup and view all the answers

<p>A written authority confirming the equipment is dead and earthed. (B)</p> Signup and view all the answers

<p>The external signalling gear for damage. (B)</p> Signup and view all the answers

<p>Advise relevant staff as quickly as possible. (B)</p> Signup and view all the answers

<p>Return current. (B)</p> Signup and view all the answers

<p>Two flexible bonds. (D)</p> Signup and view all the answers

<p>Immediately report it to the Traction Power Controller. (B)</p> Signup and view all the answers

<p>The equipment is conducting electricity at all times. (C)</p> Signup and view all the answers

<p>3.25 m (C)</p> Signup and view all the answers

<p>2.75 m (A)</p> Signup and view all the answers

<p>2.75 m (A)</p> Signup and view all the answers

<p>For distances up to 70 m with an approach signal (D)</p> Signup and view all the answers

<p>3.05 m (A)</p> Signup and view all the answers

<p>2.90 m (D)</p> Signup and view all the answers

<p>2.75 m (A)</p> Signup and view all the answers

<p>3.25 m (D)</p> Signup and view all the answers

<p>Employees should move away from potential contact points. (D)</p> Signup and view all the answers

<p>Inform the Station Master promptly. (C)</p> Signup and view all the answers

<p>Ensure Rails do not exceed a combined length of 300 meters. (D)</p> Signup and view all the answers

<p>Fencing posts near overhead equipment. (D)</p> Signup and view all the answers

<p>Insulated tools can be used at any time. (C)</p> Signup and view all the answers

<p>250 meters. (B)</p> Signup and view all the answers

<p>Apply First Aid as soon as possible. (D)</p> Signup and view all the answers

<p>When there are staff present near vehicles. (C)</p> Signup and view all the answers

<p>700 mm (D)</p> Signup and view all the answers

<p>Provision of a wire mesh screen (C)</p> Signup and view all the answers

<p>2.2 KV clearance from DOT (B)</p> Signup and view all the answers

<p>Nominated officers (B)</p> Signup and view all the answers

<p>Insulated tools (D)</p> Signup and view all the answers

<p>22-A1: Visibility of Signals (B)</p> Signup and view all the answers

<p>To eliminate the risk of overhead wires (C)</p> Signup and view all the answers

<p>22-A3 (A)</p> Signup and view all the answers

<p>Insulators must prevent contact between insulated and uninsulated portions. (B)</p> Signup and view all the answers

<p>It prevents the rail voltage from transferring to the rod. (C)</p> Signup and view all the answers

<p>Additional insulators must be installed. (C)</p> Signup and view all the answers

<p>They need to be electrically isolated from the track. (C)</p> Signup and view all the answers

<p>All insulators must be situated between the same sets of rollers and guides. (A)</p> Signup and view all the answers

<p>40 mm (A)</p> Signup and view all the answers

<p>Points on electrified lines must have their operating rod insulated. (B)</p> Signup and view all the answers

<p>40 mm (D)</p> Signup and view all the answers

<p>5.2 meters (C)</p> Signup and view all the answers

<p>600 meters (B)</p> Signup and view all the answers

<p>The signal must be mounted on an offset bracket. (B)</p> Signup and view all the answers

<p>Visibility should be checked by the Official in charge both day and night. (B)</p> Signup and view all the answers

<p>After each phase of O.H.E work. (C)</p> Signup and view all the answers

<p>The same precautions as for signals without junction indicators must be followed. (D)</p> Signup and view all the answers

<p>3.65 meters (C)</p> Signup and view all the answers

<p>A special study shall be made regarding its offset positioning. (A)</p> Signup and view all the answers

<p>2.75 m (B)</p> Signup and view all the answers

<p>Signals should be at least 600 m away from OHE masts. (A)</p> Signup and view all the answers

<p>In special cases as specified. (C)</p> Signup and view all the answers

<p>5.2 m (C)</p> Signup and view all the answers

<p>3.05 m (D)</p> Signup and view all the answers

<p>They should not normally be in the lane where signals are located within 600 m. (D)</p> Signup and view all the answers

<p>Same as for signals without route indicators. (B)</p> Signup and view all the answers

<p>The drop arms can be off-set from the signal center line. (A)</p> Signup and view all the answers

<p>To ensure a return current path in constrained spaces (C)</p> Signup and view all the answers

<p>Increased potential difference leading to electric shock hazards (D)</p> Signup and view all the answers

<p>They minimize resistance of the current flow between tracks (B)</p> Signup and view all the answers

<p>In multiple scenarios including between insulated joints and earth (B)</p> Signup and view all the answers

<p>Unsafe conditions and possible electric shocks (A)</p> Signup and view all the answers

<p>It poses severe electric shock risks to personnel in contact (A)</p> Signup and view all the answers

<p>They maintain the integrity of the electrical circuit in return paths (C)</p> Signup and view all the answers

<p>Development of hazardous potential differences (D)</p> Signup and view all the answers

<p>3.20 m (B)</p> Signup and view all the answers

<p>Continue resuscitation until the person recovers (A)</p> Signup and view all the answers

<p>3.55 m (B)</p> Signup and view all the answers

<p>Name and address of the officer (C)</p> Signup and view all the answers

<p>3.05 m (A)</p> Signup and view all the answers

<p>4.02 m setting distance (D)</p> Signup and view all the answers

<p>3.40 m (B)</p> Signup and view all the answers

<p>Adherence to operating rules (A)</p> Signup and view all the answers

<p>Special safety measures (C)</p> Signup and view all the answers

<p>The maximum permissible distance between point contactor and point motor (A)</p> Signup and view all the answers

<p>Insulators (B)</p> Signup and view all the answers

<p>To protect against high voltage transmission (B)</p> Signup and view all the answers

<p>It is inherently immune to induced voltage (A)</p> Signup and view all the answers

<p>2200 meters (A)</p> Signup and view all the answers

<p>Induced voltage presence (D)</p> Signup and view all the answers

<p>They must employ ac-immunized relays (D)</p> Signup and view all the answers

<p>A power block must be taken. (A)</p> Signup and view all the answers

<p>As live conductors. (B)</p> Signup and view all the answers

<p>1600 meters. (D)</p> Signup and view all the answers

<p>To explain the instructions to the staff. (B)</p> Signup and view all the answers

<p>4 meters. (D)</p> Signup and view all the answers

<p>400 m after the stop signal. (A)</p> Signup and view all the answers

<p>The train should not cross the signal while coasting. (B)</p> Signup and view all the answers

<p>To ensure signals operate independently of traction currents (A)</p> Signup and view all the answers

<p>Consult the Chief Electrical Engineer. (A)</p> Signup and view all the answers

<p>Weather conditions affecting signal visibility (B)</p> Signup and view all the answers

<p>Protective shields for signal structures (C)</p> Signup and view all the answers

<p>By transferring circuits into underground cables with a metal sheath (B)</p> Signup and view all the answers

<p>Various currents and voltages (D)</p> Signup and view all the answers

<p>To ensure proper functioning of field S&amp;T equipment (B)</p> Signup and view all the answers

<p>Protective measures and clear signage (C)</p> Signup and view all the answers

<p>Visibility and electrical clearances of signals (C)</p> Signup and view all the answers

<p>3.25 m (A)</p> Signup and view all the answers

<p>Drop arms of portals (B)</p> Signup and view all the answers

<p>5.2 m (D)</p> Signup and view all the answers

<p>3.05 m (B)</p> Signup and view all the answers

<p>Use off-set mounting for the signal (C)</p> Signup and view all the answers

<p>Minimum clearances from conductors (D)</p> Signup and view all the answers

<p>2.75 m (D)</p> Signup and view all the answers

<p>They must be offset opposite the signal (C)</p> Signup and view all the answers

<p>700 mm (A)</p> Signup and view all the answers

<p>Use of wire mesh screen (B)</p> Signup and view all the answers

<p>A certificate of clearance from DOT for 2.2 KV anti-theft energisation (D)</p> Signup and view all the answers

<p>Principal Chief Signal and Telecom Engineer (B)</p> Signup and view all the answers

<p>Convert to cables and remove overhead wires (C)</p> Signup and view all the answers

<p>Compliance with the issued checklist (A)</p> Signup and view all the answers

<p>22-A1 (A)</p> Signup and view all the answers

<p>22-D2 (A)</p> Signup and view all the answers

<p>To reduce the resistance of the current to a minimum (D)</p> Signup and view all the answers

<p>Unsafe working conditions leading to potential damage at rail ends (C)</p> Signup and view all the answers

<p>Mild steel straps or G.I. wire ropes (A)</p> Signup and view all the answers

<p>Supply is switched off to prevent electric shock (D)</p> Signup and view all the answers

<p>Unsafe conditions potentially causing electric shock (D)</p> Signup and view all the answers

<p>To prevent any current buildup in the structures (D)</p> Signup and view all the answers

<p>Risk of electric shock due to potential difference (C)</p> Signup and view all the answers

<p>To ensure good earthing for safety (B)</p> Signup and view all the answers

Point operation can be achieved electrically or mechanically using rodding.

Special safety measures are required for personnel when operating points mechanically.

Electric control systems have distance restrictions from control relays to the point machine, depending on voltage immunity.

Point detection and repeat circuits use relays specially designed to handle alternating current (AC).

The maximum distance between point machine components (contactor and motor) varies based on the AC immunity level (in volts).

3-phase point machines are inherently immune to induced voltages and can be used over any length based on their operating limits.

Point rods in AC electrified areas experience induced voltages, which can be high during faults.

Insulated rod joints and insulators in lead outs protect operating and maintenance staff from high voltages.

Insulators must be placed to prevent contact between insulated and uninsulated parts of rods, preventing rail voltage from travelling to main rods.

For distances of more than 300 meters between insulators at either end, additional insulators must be added on each rod, ensuring the gaps between insulators on the same rod do not exceed 300 meters.

Point, trap indicators, and lock bars operated by rods must be electrically isolated from the track.

Insulators in a set must be positioned between the same rollers and guides. This prevents contact between different rods' insulated parts and uninsulated parts.

Rods crossing tracks must maintain clearance of at least 40 mm (1.57 inches) from rails and sleepers.

Rod operated point levers/boxes on electrified lines, and those adjacent to electrified tracks, should have an insulator to prevent the lever/box from being connected to the rail.

The Engineering department is responsible for providing insulators on operating rods when providing point levers/boxes.

Details on power supply arrangements can be found in SEM Chapter 16.

A disruption in the overhead electrical equipment's catenary or contact wire.

To immediately notify all signalling staff about a catenary/contact wire break.

To verify if signalling equipment is operating normally after a wire break.

Temporarily stopping the operation of faulty signalling equipment during an incident.

To inspect and test all circuits and equipment, especially external signalling gear, after an incident.

A formal statement from a qualified signal department representative that everything is operating correctly.

Using 2.2 kilovolts to prevent theft, following specific guidelines.

Replacement of existing DC relays with AC relays for safety and operational compatibility in 2.2 KV Charging systems.

The visibility of signals is an important factor when placing signal masts for reliable operation and safety. Specific distances and mast heights need to be considered to ensure clarity.

A type of signal that does not show the route to be taken, using only color lights.

The minimum distance between the signal and mast for signals without an approach signal, varying based on distance.

The minimum distance between the signal and mast for signals with an approach signal, varies with distance from signal.

A type of signal that uses color lights and route indicators, like arrows, to show the path.

A type of route indicator that uses horizontal symbols to show the desired track.

The minimum distance between the signal and mast when horizontal route indicators are present, different distances based on distance from signal

All electrical equipment, power lines, and cables are considered electrically live at all times.

To work safely near electrical equipment, a qualified official from the Electrical Department must confirm it's made dead (de-energized) and earthed (grounded).

Ensuring the visibility of signals in the electrified area for correct signaling and safe operation

Engineering staff must report immediately any defects or breakdowns in overhead equipment, including track and structure bonds, to the Traction Power Controller.

When overhead equipment faults could harm trains or pantographs, and communication isn't possible to issue caution/warning orders, line protection must be followed according to the General Rule 3.62.

These are components that ensure proper electrical circuit continuity and grounding in electrified areas, where return current often flows through the rail.

DC electrified rail systems use flexible copper bonds at each rail joint to minimize resistance in the return current path.

Engineering staff need to know and enforce safety rules, maintain electrical equipment knowledge and ensure staff under their command follows the rules in electrical traction areas.

Notice of any defect in overhead gear (including track/structure bonds) needs to be immediately communicated to the Traction Power Controller.

Catch sidings that are sanded to insulate trains from the ground except by couplings or buffers.

Electric engines or single or multiple-unit trains should not be energized in catch sidings with personnel present near the tracks.

Metallic structures near overhead equipment can develop dangerous induced voltages.

Rails should not be unloaded in a way that would allow them to touch each other to form a long metallic mass in electric areas.

Permanent way personnel are to stay clear of tracks with trains within 250m of the tracks that are electrified.

If a fire is found near electrified equipment, do not attempt to put it out; report it immediately.

First aid should be applied promptly when someone experiences an electric shock.

Insulated and uninsulated tools must be used following appropriate safety guidelines.

The center line of a red signal should be approximately 3.65 meters above rail level.

No part of a signal without a route indicator should be higher than 5.2 meters above rail level.

Signals between tracks should have at least a 600-meter distance for OHE structures behind them.

Portal drop arms should be at least 600 meters before signals in the same track space.

Signals that need to be installed behind portal drop arms should be on offset brackets for special consideration of offsetting the portal arms as well.

Signal visibility should be checked by day and night by the signal official after OHE work phases.

If visibility is inadequate, the signal official must impose speed restrictions and necessary improvements.

Setting distances for OHE masts for signals with junction indicators outside tracks are according to Drg.No.22-D7.

Signal posts and fittings must remain at least 700mm away from live electrical conductors, ensuring safety.

Maintenance staff must use insulated tools to prevent electrical shock in electrified areas.

Switching existing overhead track crossings to cable lines and removing overhead wires.

Required certificate from the Department of Telecommunications for 2.2 KV anti-theft energization.

A document outlining specific work requirements for charging overhead equipment at 25KV.

Signal visibility in electrified areas to ensure safe rail operation, following specific guidelines.

A minimum of 2 meters electrical safety clearance is needed for signal platform work.

Technical drawings specifying appropriate signal setup clearances based on track types and equipment.

For distances more than 300 meters between insulators, additional insulators are needed on each rod to keep the space between consecutive insulators less than 300 meters.

Place insulators to stop voltage from going from the insulated parts of one rod to the uninsulated parts of another, or to the track.

Rod-operated point, trap indicators, and lock bars must be electrically separated from the track.

All insulators in a run must be between two sets of rollers and guides; this will make sure one rod's insulated part won't touch another's un-insulated part.

Rods crossing tracks need a minimum of 40mm clearance from the bottom of rails and sleepers.

Rod-operated point levers or boxes must be insulated to stop them from touching the track on electrified lines, or those next to electrified lines.

The Engineering department provides insulators when they provide point levers/boxes.

Details of power supply arrangements are in SEM Chapter 16.

The shortest distance permitted between a signal and the overhead line equipment (OHE) mast for signals without an approach signal. The distance varies per distance interval up to 280 m.

The shortest distance permitted between a signal and the overhead line equipment (OHE) mast for signals with an approach signal, varying according to distance intervals.

Signals using only coloured lights to convey information, without route directions.

No part of a colour light signal without a route indicator can be higher than 5.2 meters above rail level.

Setting distances for OHE masts for signals with junction indicators outside the tracks, as per document Drg.No.22-D7.

Signals located between tracks need to maintain a minimum distance of 600 meters from overhead line equipment (OHE) masts.

Portal drop arms should be positioned at least 600 meters away from signals located on the same track.

Signals that need to be positioned behind portal drop arms require an offset bracket for proper consideration for offsetting the portal arms.

The method used to restore breathing during resuscitation.

Sustained efforts to restore breathing, until a doctor takes charge.

The person in charge of power lines running across railway land.

Obtaining the contact details of the power line officer for timely reporting of defects/accidents.

The shortest allowed distance between signals and structures, varying based on signal type and distance from signal.

A signal only using colored lights to convey information, lacking route display.

Shortest allowed distance between signal and mast with an approach signal, varying with distance from signal.

A signal using colored lights and route indicators, like arrows, to show the route.

Components in electrified rail systems ensuring continuous electrical connection to maintain current flow in rails.

Bonds connecting adjacent tracks to minimize current resistance during electrical operation.

Connections from structures supporting overhead equipment to running rails to ensure proper grounding and prevent electrical shock.

The current flowing back to the power source through the rails, which can create potentially dangerous voltage differences.

Faults or breakdowns in overhead wires and supporting structures that might pose danger to trains and personnel.

The danger of direct contact with energized overhead lines while working in electrified railway sections.

Flexible copper bonds used to connect rail joints to maintain continuous electrical current paths.

Voltage variations possible between rails, rails and ground, fractured rails, and insulated rail joints, which pose safety hazards.

Keep tools and equipment at least 2 meters away from live electrical components in electrified areas; return conductors are also considered live.

Signals must be placed at minimum heights and distances from the track to prevent electrical interference, as illustrated in Drg. Nos. 22-D4 and 22-D5.

Neutral sections should be positioned away from stop signals and level crossings, ideally on tangent tracks, to ensure safe train operation.

Neutral sections should be placed at least 1600 meters from stop signals on gradients up to 1 in 300 and 2500 meters on steeper gradients.

PTFE neutral sections must be at least 400 meters after and 200 meters before stop signals on tangent tracks, providing improved safety.

Signal supervisors must train staff on safety procedures and ensure compliance in electrified areas.

Engineering staff must enforce safety rules, maintain electrical equipment knowledge and ensure staff follow safety procedures in electrified sections.

Reporting any breakdowns or defects in overhead equipment (including track and structure bonds) immediately to the Traction Power Controller is crucial.

Ensure signalling equipment functions correctly, avoids false indications or hazards caused by traction current, even in faulty conditions, and protects personnel from electric shock.

Visibility of signals due to overhead equipment (OHE), electrical clearances, traction return current, and electromagnetic induction are key factors determining the success of signal operation.

OHE structures' design and placement influence signal visibility. Protective shielding is required where adequate clearances aren't possible.

Eliminated largely by using underground cables with metal sheaths.

Causes voltage and current variations in conductors near the track, including signalling/telecommunication circuits.

Structural, longitudinal, and cross bonds ensure proper grounding and functioning of field signalling and telecommunication equipment in yards and block sections.

Signal structures need safe distances from energized overhead lines. Protective measures like shielding are needed when clearances cannot be maintained.

Current flow back to the power source via the track rails, posing challenges to signalling equipment by creating potential gradients.

Points can be operated electrically or mechanically using rodding.

Requires special safety measures for operating staff.

Distance restrictions exist between point control relays and machines based on immunity levels.

Relays in point detection circuits are designed to handle alternating current (AC).

Maximum distance between point machine components (contactor & motor) depends on voltage immunity.

Naturally resistant to induced voltages, suitable for extensive use.

Rods in AC electrified areas experience induced voltages, potentially dangerous, especially during faults.

Insulated connections on rods are used to protect workers from high voltages.

Wire mesh screens are needed on signal platforms when 2 meters electrical clearance isn't available to ensure safety proximity to live conductors.

Maintenance staff must use insulated tools for safety while working in electrified areas.

Changing existing overhead track crossings to cable lines and taking down overhead wires.

A necessary document proving compliance with the DOT guidelines to use 2.2 KV anti-theft energization.

A document providing precise specifications of works to be done for charging overhead equipment at 25KV.

Ensuring clear visibility of signals for safe operation of trains in electrified areas.

A minimum 2-meter safety distance is needed around live electrical components during work.

Technical drawings providing the spacing requirements for signals based on the track type and equipment.

Components in electrified rail systems ensuring continuous electrical connection to maintain current flow in rails.

Bonds connecting adjacent tracks to minimize current resistance during electrical operation.

Connections from structures supporting overhead equipment to running rails to ensure proper grounding and prevent electrical shock.

The current flowing back to the power source through the rails, which can create potentially dangerous voltage differences.

Faults or breakdowns in overhead wires and supporting structures that expose danger to trains and personnel.

The risk of direct contact with energized overhead lines while working in electrified railway sections.

Flexible copper bonds used to connect rail joints to maintain continuous electrical current paths.

Voltage variations possible between rails, rails and ground, fractured rails, and insulated rail joints, posing safety hazards.

The shortest distance between a signal and overhead line equipment (OHE) mast for signals without an approach signal; the distance varies depending on the distance from the signal.

The shortest distance allowed between a signal and the OHE mast for signals with an approach signal, varying by distance.

Signals that use only colored lights to convey information, without indicating the route.

No part of a color light signal without a route indicator can be higher than 5.2 meters above rail level.

Setting distances for OHE masts for signals with junction indicators located outside the tracks, as per Drg.No.22-D7.

Signals between tracks need to maintain a minimum distance of 600 meters from overhead line equipment (OHE) masts.

Portal drop arms need to be placed at least 600 meters away from signals located on the same track.

Signals that need to be positioned behind portal drop arms require an offset bracket for proper consideration of offsetting the portal arms as well.